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First, I have a search impediment. Deal with it.

HI, I have an RB25DET with a new alloy radiator and am wondering which coolant to use? The car came with an alloy radiator but it got corroded and turned to shit. It had green coolant, but not sure what brand. Ive previously had bad experiences with Tectaloy, so Im thinking (hoping) they used that.

Has anyone used anything like Waterwetter? Can we get products similar to that in oz?

Has anyone used red coolant in an RB?

Cheers

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I use pre-mixed Tectaloy in 3 of my Skylines without issue. The GTR for a decade.

Both stock and alli radiators. R32 GTR, R32 4 Door, R34 GTT and a Liberty

If you have had an issue it was already corroded, or you have mixed red/green coolant without a proper flush.

If you add water make sure it's distilled as mentioned above.

I have seen different brands of green coolant do the same thing. Flushing the block until it runs clear, or 5-6 times is the only way to be sure.

I have always used tank water without issue, the local Natrad bloke swears by normal tap water. We both agree it's the mixing of brands that causes the corrosion, not the water quality.

The best option is Evans coolant. No boiling, no corrosion and no expansion by removing water from the equation altogether.

Just keep in mind the possibility of stray electrical current (Electrolysis) within the cooling system which can Eat away at your radiator.

Fancy name coolants still will not stop this.

Using Nulon LLC premixed coolant. Got it on sale bargain!

Just keep in mind the possibility of stray electrical current (Electrolysis) within the cooling system which can Eat away at your radiator.

Fancy name coolants still will not stop this.

Is this more a problem with aftermarket alloy radiators.?

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